PURPOSE The stereotactic radiotherapy (SRT) system verifies isocenter accuracy in patient space. In this study, we evaluate isocenter accuracy in frameless SRT using implanted cranial gold markers. MATERIALS AND METHODS We performed frameless SRT on 43 intracranial tumor patients between August 1997 and December 2000. The treatment technique was… (More)
While the interests in intelligent vehicle increase, many people are having concerns about systems that offer the information of distance and relative speed between two cars. This paper presents an algorithm to obtain efficiently the distance between two cars.
Some digital signal processing applications, such as direct digital frequency synthesizer (DDFS), request multiplications with a group (or, groups) of a few predetermined coefficients. In this paper, based on the variation of the CSD coding method, efficient multiplier design method for pre-determined coefficient groups is proposed. In the case of the… (More)